Burglar-proof door attachment.



3315"-loW-lthe. transverse shoulder thereon to as-v andv when the' door is shut the bolt enters the 'slot andholdsthe door closed. Now, if an attempt be made toforce the door away y. from the casing at the unhinged edge of the -door by inserting a jimmy or other. pry, these attachments will preventsuch an operation because the end of plate -er 20A will engage thel back of the striking plate 22A or 22A." The fiat' plateA 20 or 20A which lies 10 directly back of the slidable bolt of the latch i' events the insertion of a tool to force back bolt 30. Should a prying pressure be lied sufcient to bend the end of the casfixture plate,4the attachments will still event the releasing of the latch because. *Y el shoulder 81 on the latch bolt will then be orced'out into engagement with the door casing plate and will effectively prevent jfrflongitudinal ovement of the door away om the do b.

The comin form of spring latch which fshownfis only chosen to illustrate the in- -ie'ntiom"and, it is to be understood of course, ,llithat any lform of latc k may be used ink-conjunction with l arrangement ffdesired. Y

'What I clai'rni 1. A' swinging door ving a sliding bolt,'saidv bolt having a transverse shoulder atone end parallel to the plane of the door7 a vdoor casing, and a striking plate aiiixed to said casing provided with an opening adapted to receive the slide ing bolt when the door is closed, and to al- "sl'lme' a position back ofthe striking late.

1 2.l A swinging door, a latch there or hav- '-jnga lsliding bolt, said bolt having a trans` .versefshoulder at one end, a plate onf the door `under said catch projecting beyond the edge of the door, said plate being provided with notches, a door casing, and a striking plate aii'xed to said casing provided with a slotted portion adapted to .receive said notched plate freely when the door is swung and provided with an opening adapted to receive the sliding bolt when the door is closed, and to allow the transverse'shoulder thereon to assume a positionv back of the striking plate, and a suitable spring member within the door jamb to press against the door, thereby holding the bolt incontact withjthe .striking late.

3. A swinging fiber, a latch therefor having a sliding bolt, said 'bolt having a transverse shoulder at one end, a plate on the door under said catch projecting beyond the edge of the door, said 4plate being 'provided with notches,a door casing, and a strikingy plate affixed to said casing providedl with a slotted portion adapted to receive the portion of said notchedy plate between the notches freely when the door is swung and provided with an opening adapted to re'- ceive the vsliding bolt when lthe door is Y f closed, and to allow the transverse shoulder. atch therefor hav- GEORGE HENSLE. Witnesses i I FLORA GRAVES, l L. H. CAMPBE` Il, Jr. 

